On 12/03/2016 09:02 PM, Jarkko Sakkinen wrote:
> On Wed, Nov 23, 2016 at 12:04:11PM +0200, Tomas Winkler wrote:
>> Functions tpm_transmit and transmit_cmd are referenced
>> from other functions kdoc hence deserve documentation.
>>
>> Signed-off-by: Tomas Winkler <tomas.wink...@intel.com>
>
> Do you mind if I change TPM_DIGEST_SIZE to SHA1_DIGEST_SIZE?
>
> I'm looking to drop TPM_DIGEST_SIZE eventually.
I was thinking if we should use SHA1_DIGEST_SIZE directly from
<crypto/sha.h>, or probably <crypto/hash_info.h>
Thanks & Regards,
- Nayna
>
> Reviewed-by: Jarkko Sakkinen <jarkko.sakki...@linux.intel.com>
>
> /Jarkko
>
>> ---
>> V2: Add some missing '.'
>> drivers/char/tpm/tpm-interface.c | 33 ++++++++++++++++++++++++++++-----
>> 1 file changed, 28 insertions(+), 5 deletions(-)
>>
>> diff --git a/drivers/char/tpm/tpm-interface.c
>> b/drivers/char/tpm/tpm-interface.c
>> index a2688ac2b48f..769d8b0d31a3 100644
>> --- a/drivers/char/tpm/tpm-interface.c
>> +++ b/drivers/char/tpm/tpm-interface.c
>> @@ -328,8 +328,17 @@ unsigned long tpm_calc_ordinal_duration(struct tpm_chip
>> *chip,
>> }
>> EXPORT_SYMBOL_GPL(tpm_calc_ordinal_duration);
>>
>> -/*
>> - * Internal kernel interface to transmit TPM commands
>> +/**
>> + * tmp_transmit - Internal kernel interface to transmit TPM commands.
>> + *
>> + * @chip: TPM chip to use
>> + * @buf: TPM command buffer
>> + * @bufsiz: length of the TPM command buffer
>> + * @flags: tpm transmit flags - bitmap
>> + *
>> + * Return:
>> + * 0 when the operation is successful.
>> + * A negative number for system errors (errno).
>> */
>> ssize_t tpm_transmit(struct tpm_chip *chip, const u8 *buf, size_t bufsiz,
>> unsigned int flags)
>> @@ -409,9 +418,21 @@ ssize_t tpm_transmit(struct tpm_chip *chip, const u8
>> *buf, size_t bufsiz,
>> return rc;
>> }
>>
>> -#define TPM_DIGEST_SIZE 20
>> -#define TPM_RET_CODE_IDX 6
>> -
>> +/**
>> + * tmp_transmit_cmd - send a tpm command to the device
>> + * The function extracts tpm out header return code
>> + *
>> + * @chip: TPM chip to use
>> + * @cmd: TPM command buffer
>> + * @len: length of the TPM command
>> + * @flags: tpm transmit flags - bitmap
>> + * @desc: command description used in the error message
>> + *
>> + * Return:
>> + * 0 when the operation is successful.
>> + * A negative number for system errors (errno).
>> + * A positive number for a TPM error.
>> + */
>> ssize_t tpm_transmit_cmd(struct tpm_chip *chip, const void *cmd,
>> int len, unsigned int flags, const char *desc)
>> {
>> @@ -434,6 +455,8 @@ ssize_t tpm_transmit_cmd(struct tpm_chip *chip, const
>> void *cmd,
>> return err;
>> }
>>
>> +#define TPM_DIGEST_SIZE 20
>> +#define TPM_RET_CODE_IDX 6
>> #define TPM_INTERNAL_RESULT_SIZE 200
>> #define TPM_ORD_GET_CAP cpu_to_be32(101)
>> #define TPM_ORD_GET_RANDOM cpu_to_be32(70)
>> --
>> 2.7.4
>>
>
> ------------------------------------------------------------------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
> _______________________________________________
> tpmdd-devel mailing list
> tpmdd-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/tpmdd-devel
>
------------------------------------------------------------------------------
Developer Access Program for Intel Xeon Phi Processors
Access to Intel Xeon Phi processor-based developer platforms.
With one year of Intel Parallel Studio XE.
Training and support from Colfax.
Order your platform today.http://sdm.link/xeonphi
_______________________________________________
tpmdd-devel mailing list
tpmdd-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/tpmdd-devel
